• Part Number AXR9 280 3GBD5-T2DHE/OC• Graphics Engine RADEON R9 280• Video Memory 3GB GDDR5• Engine Clock 855MHz (up to 960MHz with boost)• Memory Clock 1250MHz x 4 (5.0 Gbps)• Memory Interface 384bit• DirectX® Support 11.2• Bus Standard PCIE 3.0• Standard Display Connecors DL-DVI/HDMI/Mini Display Port x2• Feature Support• OpenGL Support• CrossFireX™ Technology Support• ATI Stream Technology Support• ATI Eyefinity Technology Support• Display Support• VGA Output Yes, By DVI to VGA converter• DVI Output DL-DVI-I• DisplayPort On Board• HDMI On Board• HDCP Support Support• Maximum Resolution• VGA 2048x1536• DVI 2560x1600• DisplayPort 4096x2160• HDMI 4096x2160• Power Specs + Board Dimensions• Board Dimensions 266.65mmx111.2mmx38mm• Minimum System Power requirement (W) 750W• Extention Power Connector One 6-Pin and One 8-Pin PCI Express Power connectors